FirmenData for ChatGPT

com.firmendata/mcp

German, Austrian and Swiss company register data: financials, shareholders, UBOs, history.

client:ChatGPT transport:streamable-http

Install FirmenData in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://mcp.firmendata.com/mcp

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs